confirmation

kɒnfəˈmeɪʃ(ə)n

noun

the action of confirming something or the state of being confirmed.

high unemployment figures were further confirmation that the economy was in recession

corroboration,verification,proof,testimony,endorsement,authentication,substantiation,justification,vindication,support,evidence,ratification,approval,authorization,validation,sanction,formalization,certification,accreditation,recognition,acceptance,agreement to,consent to